Question

zad 3 zbiór zadań matematyka 2001 str.6/1 /C)ile to dekagramów:1/2 kg 1/10kg 9/20kg 7/25kg D)ile to sekund: 1/2 min. 1/5 min 7/10 min 9/20 min 7/30min

Answer 1

C)ile to dekagramów: 1 kg=100dag

1/2 kg=50dag

1/10kg=10dag

9/20kg=90dag

7/25kg=28dag

D)ile to sekund:1 min=60sekund

1/2 min.=30s

1/5 min=12 s

7/10 min=42 s

9/20 min=27s

7/30min=14s

Answer 2

c)

1/2kg=50dag

1/10kg=1dag

9/20kg=45/100kg=45dag

7/20kg=35/100kg=35dag 

d)

1/2min=30s

1/5min=12/60min=12s

7/10min=42/60min=42s

9/20min=27/60min=27s

7/30min=14/60min=14s